64519936241 has 8 divisors (see below), whose sum is σ = 65487141600. Its totient is φ = 63552855168.

The previous prime is 64519936199. The next prime is 64519936249. The reversal of 64519936241 is 14263991546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64519936241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64519936241.

It is not an unprimeable number, because it can be changed into a prime (64519936249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022785 + ... + 2054433.

It is an arithmetic number, because the mean of its divisors is an integer number (8185892700).

Almost surely, 2^64519936241 is an apocalyptic number.

It is an amenable number.

64519936241 is a deficient number, since it is larger than the sum of its proper divisors (967205359).

64519936241 is a wasteful number, since it uses less digits than its factorization.

64519936241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62143.

The product of its digits is 1399680, while the sum is 50.

The spelling of 64519936241 in words is "sixty-four billion, five hundred nineteen million, nine hundred thirty-six thousand, two hundred forty-one".